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We used a linear model because…
model1 <- lm(formula = dist ~ speed, data = cars)
model1##
## Call:
## lm(formula = dist ~ speed, data = cars)
##
## Coefficients:
## (Intercept) speed
## -17.579 3.932
An increase in travel speed of one mile per hour is associated with a 3.93 foot increase in stopping distance.
Copying-and-pasting tables, charts, and numbers is tedious, error-prone, and labor intensive.
Iterating entire documents by geography, time period, or set of assumptions is even more tedious, error-prone, and labor intensive.